Has a band ever done the opposite of selling out

What I mean by this is
Has a group ever made really accessable music to get money and then they become more and more expieremental/inaccessible because they're actually doing what they want now that they have money.

the beatles duh

The Beatles did just that. The Who did that too.

Talk Talk

The Strokes.

Radiohead started being really pop rock

Danny Brown maybe

Talk Talk
Scott Walker

weezer did for one album, but then they sold out

nirvana did it kinda with nevermind and in utero